MESON Chess Problem Database

Problem Display
PID: 166835 (6Q1/5p2/8/1B6/2p5/1k6/2N5/1K6 w - - 0 1)

Wigan, TK

Chess Amateur (The), 1925

6Q1/5p2/8/1B6/2p5/1k6/2N5/1K6

#2

4 + 3

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qxf7#
    • 1...f5
      • 2.Qxc4#
    • 1...f6
      • 2.Qxc4#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Qxc4#
      • 1...c3
        • 2.Ba4#
        • 2.Qa4#
        • 2.Qb4#
        • 2.Qc4#
      • 1...Kc3!
    • 1.Qg7?
      • threat
        • 2.Qb2#
      • 1...c3
        • 2.Qxf7#
      • 1...f6!
    • 1.Qc8?
      • threat
        • 2.Qxc4#
      • 1...c3
        • 2.Qc4#
      • 1...Kc3!
  • Keys
    • 1.Kc1!
      • 1...Ka2
        • 2.Bxc4#
      • 1...Kc3
        • 2.Qg3#
      • 1...c3
        • 2.Qxf7#
      • 1...f5
        • 2.Qxc4#
      • 1...f6
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,P_SPINP(c),SBLOCK::QAB(D),XP(c)
    • P(c);OGATE,P_SPINP(b)::QAB1(D),XP(b)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAB1(D),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • P(b);OGATEB,SBLOCK::QAB(D),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(D);
      • Threat
        • QAB1(D),XP(b)
      • Vars
        • P(b);::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT::B(C),XP(b)
      • K(a);P-FLIGHT::QAR(D)
      • P(b);OGATEB,P_SPINP(c),SBLOCK::QAB(D),XP(c)
      • P(c);OGATE,P_SPINP(b)::QAB1(D),XP(b)
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